Biosculpture colour gel overlays biosculpture colour gel overlays on your natural nail a gel overlay is an extremely natural looking enhancement done on the nails the enhancement leaves your nails thin and natural looking biosculpture is flexible non porous and resistant to lifting biosculpture french gel overlays biosculpture french gel overlays on your natural nail a gel overlay is an extremely natural looking enhancement done on the nails the enhancement leaves your nails thin an